安徽农业大学学报2025，Vol.52Issue(6)：1173-1178,6.DOI:10.13610/j.cnki.1672-352x.20260107.027
基于旋转3D打印的液晶弹性体(LCE)超螺旋致动器
Supercoiled liquid crystal elastomer actuators based on rotational 3D-printing
摘要
Abstract
[Objective]In recent years,the rapid development of soft robots,smart agricultural equipment,and minimally invasive veterinary medical devices calls for novel soft actuators that combine high strain and high-power density.However,existing smart materials are mostly limited to uniaxial contraction or simple bend-ing,making it difficult to balance stroke and output force,which restricts their application in complex,high-load scenarios.Therefore,inspired by the high-energy and large-deformation mechanism of DNA supercoiling,this study aimed to develop a supercoiled liquid crystal elastomer(LCE)actuator capable of coupled torsion-coiling deformation while delivering both high strain and high-power density output.[Method]This liquid crystal elas-tomer(LCE)supercoiled actuator was fabricated via rotational 3D printing.By implementing spiral orientation programming of the director field at the fiber sub-voxel scale,the LCE filaments undergo a DNA-like coupled torsion-coiling deformation upon thermal triggering,which results in an axial stroke and a power density far ex-ceeding those of conventional LCE actuators.[Result]The chirality-matched double-fiber supercoiled actuator can achieve an axial contraction strain exceeding 90%under no-load conditions,and could still output mechanical work of 350 J·kg⁻1 under loads thousand times its own weight.[Conclusion]This actuation strategy not only pro-vides a new paradigm for high-performance drives in soft robotics and wearable assistive devices but also aligns with the demands of modern precision agriculture for lightweight,rapid,and energy-efficient actuators,potentially advancing the miniaturization and intelligentization of agricultural equipment.关键词
软体执行器/各向异性/3D打印/液晶弹性体/螺旋取向Key words
soft actuator/anisotropy/3D printing/liquid crystal elastomer/helical orientation分类
信息技术与安全科学引用本文复制引用
朱正清,李木军..基于旋转3D打印的液晶弹性体(LCE)超螺旋致动器[J].安徽农业大学学报,2025,52(6):1173-1178,6.基金项目
统筹推进世界一流大学和一流学科建设专项资金(WK2090000070) （WK2090000070）
